When committing changes to our own installation of the Open Build Service, sometimes the webinterface will not show the rebuilds triggered by the changes. Instead, it shows a yellow triangle on the repo icons and hints "State Needs Recalculations" when hovering over the icon. It seems, that this happens due to outdated information fetched from Memcached. To fix this problem run

rcmemcached restart

which will invalidate the cached information used by the frontend and make it display fresh values.